Enable RSpec/FilePath cop and fix all issues

Read about cop at http://www.rubydoc.info/gems/rubocop-rspec/RuboCop/Cop/RSpec/FilePath

spec/models/verification/sms_spec.rb

@@ -0,0 +1,22 @@
+require 'rails_helper'
+
+describe Verification::Sms do
+  it "is valid" do
+    sms = build(:verification_sms)
+    expect(sms).to be_valid
+  end
+
+  it "validates uniqness of phone" do
+    create(:user, confirmed_phone: "699999999")
+    sms = described_class.new(phone: "699999999")
+    expect(sms).to_not be_valid
+  end
+
+  it "only allows spaces, numbers and the + sign" do
+    expect(build(:verification_sms, phone: "0034 666666666")).to be_valid
+    expect(build(:verification_sms, phone: "+34 666666666")).to be_valid
+    expect(build(:verification_sms, phone: "hello there")).to_not be_valid
+    expect(build(:verification_sms, phone: "555; DROP TABLE USERS")).to_not be_valid
+  end
+
+end